How many periods are on the periodic table? - ProProfs Discuss
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How many periods are on the periodic table?



A. 4
B. 7
C. 9

This question is part of Periodic Table Test
Asked by Mrsbumgarner, Last updated: Mar 27, 2019

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1 Answer

mrsbumgarner

Mrsbumgarner

Answered on Sep 30, 2017

7
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